Ink compositions for thermal ink jet printing
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Claims
4. An ink composition according to claim 1 wherein B is (HO--CH.sub.2 CH.sub.2).sub.2 NH.sub.2.sup.+.
5. An ink composition according to claim 1 wherein the fluorinated material is present in an amount of from about 0.1 to about 10 percent by weight of the ink.
6. An ink composition according to claim 1 wherein the nonionic surfactant is present in an amount of from about 0.1 to about 5 percent by weight of the ink.
7. An ink composition according to claim 1 wherein the nonionic surfactant is an octylphenoxy polyethoxy ethanol.
8. An ink composition according to claim 1 wherein the nonionic surfactant is an acetylenic diol.
9. An ink composition according to claim 1 wherein the nonionic surfactant is a non-ionic ester of ethylene oxide and propylene oxide.
10. An ink composition according to claim 1 wherein the nonionic surfactant is selected from the group consisting of ##STR16##
2. 4,7,9-tetramethyl-5-decyn-4,7-diol, CH.sub.3 (CH.sub.2).sub.n (OC.sub.2 H.sub.4).sub.8 (OC.sub.3 H.sub.6).sub.8 OH where n is an integer of from about 12 to about 16, and mixtures thereof.
11. An ink composition according to claim 1 wherein the colorant is an anionic dye.
12. A process which entails incorporating an ink according to claim 1 into an ink jet printing apparatus and causing droplets of the ink composition to be ejected in an imagewise pattern onto a substrate.
13. A process according to claim 12 wherein the printing apparatus employs a thermal ink jet process wherein the ink in the nozzles is selectively heated in an imagewise pattern, thereby causing droplets of the ink to be ejected in imagewise pattern.
16. An ink composition according to claim 14 wherein the fluorinated material is present in an amount of from about 0.1 to about 10 percent by weight of the ink.
17. An ink composition according to claim 14 wherein the nonionic surfactant is present in an amount of from about 0.1 to about 5 percent by weight of the ink.
18. An ink composition according to claim 14 wherein the nonionic surfactant is selected from the group consisting of octylphenoxy polyethoxy ethanols, acetylenic diols, trimethyl nonylpolyethylene-glycol ethers, non-ionic esters of ethylene oxide, non-ionic esters of ethylene oxide and propylene oxide, and mixtures thereof.
19. An ink composition according to claim 14 wherein the nonionic surfactant is selected from the group consisting of ##STR17##
2. 4,7,9-tetramethyl-5-decyn-4,7-diol, C.sub.12 H.sub.25 O(C.sub.2 H.sub.4 O).sub.5 H), CH.sub.3 (CH.sub.2).sub.12 (OC.sub.2 H.sub.4).sub.8 OH), CH.sub.3 (CH.sub.2).sub.n (OC.sub.2 H.sub.4).sub.8 (OC.sub.3 H.sub.6).sub.8 OH where n is an integer of from about 12 to about 16, and mixtures thereof.
20. An ink composition according to claim 14 wherein the colorant is an anionic dye.
21. A process which entails incorporating an ink according to claim 14 into an ink jet printing apparatus and causing droplets of the ink composition to be ejected in an imagewise pattern onto a substrate.
22. A process according to claim 21 wherein the printing apparatus employs a thermal ink jet process wherein the ink in the nozzles is selectively heated in an imagewise pattern, thereby causing droplets of the ink to be ejected in imagewise pattern.
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Type: Grant
Filed: Oct 30, 1997
Date of Patent: Aug 4, 1998
Assignee: Xerox Corporation (Stamford, CT)
Inventors: Kurt B. Gundlach (Fairport, NY), Walter F. Wafler (Pittsford, NY)
Primary Examiner: Helene Klemanski
Attorney: Judith L. Byorick
Application Number: 8/961,461
International Classification: C09D 1102;